I would agree that it's not really a fair conclusion to assess a speaker cab that's not set up correctly and make a solid impression of it etc... I've only heard the Klipschorn one time, and remember that I was excited to see them at a party I attended as a youth.. Well needless to say the person that owned them had the money to afford the system, but no sense of setting things up properly (how many times do you see that even from forum system pics of people who should know better)
Anyhow they were placed up against the middle area of a long wall of the type that shares a dinning room and living room ,and in between a equipment rack about 6 feet apart.. They were powered by a semi decent turntable and a NAD amp.. They got loud, but more of a over driven loud PA type party sound.. I remember thinking here is yet another person who likes to crank things up well into a distorted range and think everything's just dandy and fine.. I had wished I could hear them properly set up and mentioned to the owner that they are not meant to be placed this way, he didn't really care though as his speakers were more like a show piece to him, and not about being an audiophile with any clue about sound quality etc.. So in conclusion, no I didn't like the sound with his system and style of set up, but I fully know that isn't a fair assessment of the K-Horn at all... Haven't heard any Altec stuff to comment either... :)